utils/wxMMedia2/lib/sndpcm.cpp

   1 // --------------------------------------------------------------------------
   2 // Name: sndpcm.cpp
   3 // Purpose:
   4 // Date: 08/11/1999
   5 // Author: Guilhem Lavaux <lavaux@easynet.fr> (C) 1999
   6 // CVSID: $Id$
   7 // --------------------------------------------------------------------------
   8 #ifdef __GNUG__
   9 #pragma implementation "sndpcm.cpp"
  10 #endif
  11
  12 #include <wx/wxprec.h>
  13 #include "sndbase.h"
  14 #include "sndpcm.h"
  15
  16 wxSoundFormatPcm::wxSoundFormatPcm(wxUint32 srate, wxUint8 bps,
  17                                    wxUint16 nchannels, bool sign,
  18                                    int order)
  19  : m_srate(srate), m_bps(bps), m_nchan(nchannels), m_order(order),
  20    m_signed(sign)
  21 {
  22 }
  23
  24 wxSoundFormatPcm::~wxSoundFormatPcm()
  25 {
  26 }
  27
  28 void wxSoundFormatPcm::SetSampleRate(wxUint32 srate)
  29 {
  30   m_srate = srate;
  31 }
  32
  33 void wxSoundFormatPcm::SetBPS(wxUint8 bps)
  34 {
  35   m_bps = bps;
  36 }
  37
  38 void wxSoundFormatPcm::SetChannels(wxUint16 nchannels)
  39 {
  40   m_nchan = nchannels;
  41 }
  42
  43 void wxSoundFormatPcm::SetOrder(int order)
  44 {
  45   m_order = order;
  46 }
  47
  48 void wxSoundFormatPcm::Signed(bool sign)
  49 {
  50   m_signed = sign;
  51 }
  52
  53 wxSoundFormatBase *wxSoundFormatPcm::Clone() const
  54 {
  55   wxSoundFormatPcm *new_pcm;
  56
  57   new_pcm = new wxSoundFormatPcm();
  58   new_pcm->m_srate = m_srate;
  59   new_pcm->m_bps   = m_bps;
  60   new_pcm->m_nchan = m_nchan;
  61   new_pcm->m_order = m_order;
  62   new_pcm->m_signed= m_signed;
  63
  64   return new_pcm;
  65 }
  66
  67 wxUint32 wxSoundFormatPcm::GetTimeFromBytes(wxUint32 bytes) const
  68 {
  69   return (bytes / (m_srate * (m_bps / 8) * m_nchan));
  70 }
  71
  72 wxUint32 wxSoundFormatPcm::GetBytesFromTime(wxUint32 time) const
  73 {
  74   return (time * (m_srate * (m_bps / 8) * m_nchan));
  75 }
  76
  77 bool wxSoundFormatPcm::operator!=(const wxSoundFormatBase& format) const
  78 {
  79   wxSoundFormatPcm *format2 = (wxSoundFormatPcm *)&format;
  80
  81   if (format.GetType() != wxSOUND_PCM)
  82     return TRUE;
  83
  84   return ( (m_srate != format2->m_srate) ||
  85            (m_bps != format2->m_bps) ||
  86            (m_nchan != format2->m_nchan) ||
  87            (m_order != format2->m_order) ||
  88            (m_signed != format2->m_signed) );
  89 }